2 Chronicles 20:15

15 And he said, "Listen, all Judah and inhabitants of Jerusalem and King Jehoshaphat, thus says Yahweh to you: 'Do not be afraid and do not be dismayed before this great multitude, for the battle is not yours, but God's.

2 Chronicles 20:15 Meaning and Commentary

2 Chronicles 20:15

And he said, hearken ye, all Judah, and ye inhabitants of
Jerusalem, and thou King Jehoshaphat
There is a climax or gradation in these words rising from the lowest to the highest; from the people of the cities in the country, to the inhabitants of Jerusalem the metropolis, and from thence to the king the supreme governor: thus saith the Lord unto you, be not afraid, nor dismayed, by reason of
this great multitude;
whose numbers were discouraging to the king, and he had taken notice of them, which this respects: for the battle is not your's, but God's:
the cause was his, and he would espouse and maintain it; not they, but he, would fight the battle, and therefore they had nothing to fear.

2 Chronicles 20:15 In-Context

13 And all Judah was standing before Yahweh, [and] also their little children, their wives, and their children.

14 Then the Spirit of Yahweh came upon Jahaziel, the son of Zechariah, the son of Benaiah, the son of Jeiel, the son of Mattaniah, the Levite from the descendants of Asaph, in the midst of the assembly.

15 And he said, "Listen, all Judah and inhabitants of Jerusalem and King Jehoshaphat, thus says Yahweh to you: 'Do not be afraid and do not be dismayed before this great multitude, for the battle is not yours, but God's.

16 Tomorrow go down against them. Behold, they are coming up the ascent of Ziz. And you will find them at the end of the valley facing the desert of Jeruel.

17 [There will be] no [need] for you to fight in this [battle]. Take your stand! Stand and see the deliverance of Yahweh among you, O Judah and Jerusalem! Do not fear and do not be dismayed. Tomorrow go out before them and Yahweh [will be] with you.'"